public class people {
    public static void main(String[] args) {
        giao student =new giao();
        student.id=1;
        student.name="张三";
        student.age=21;
        student.sex="男";
        student.eat();

        giao student1 = new giao();
        student1.id=2;
        student1.name="李四";
        student1.age=25;
        student1.sex="男";
        student1.running();

        giao student2 = new giao();
        student2.id=3;
        student2.name="王丽";
        student2.age=19;
        student2.sex="女";
        student2.sleeping();

    }
}
